package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
   @Autowired
   private DishMapper dishMapper;
   @Autowired
   private SetmealMapper setmealMapper;
    /*
     * 添加购物车
     * */

    @Override
    public void add(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
        Long userId = BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list != null && list.size() > 0) {
            ShoppingCart temp = list.get(0);
            temp.setNumber(temp.getNumber() + 1);
            shoppingCartMapper.updateNumberById(temp);
            return;
        }
        shoppingCart.setCreateTime(LocalDateTime.now());
        shoppingCart.setNumber(1);
        Long dishId = shoppingCartDTO.getDishId();
         if(dishId!=null){
             Dish dish = dishMapper.getById(dishId);
             shoppingCart.setName(dish.getName());
             shoppingCart.setAmount(dish.getPrice());
             shoppingCart.setImage(dish.getImage());
         }else{
             Setmeal setmeal = setmealMapper.getById(shoppingCartDTO.getSetmealId());
             shoppingCart.setName(setmeal.getName());
             shoppingCart.setAmount(setmeal.getPrice());
             shoppingCart.setImage(setmeal.getImage());
         }
         shoppingCartMapper.insert(shoppingCart);
    }
   /*
   * 查看购物车
   * */
    @Override
    public List<ShoppingCart> list() {
        ShoppingCart shoppingCart = ShoppingCart.builder().id(BaseContext.getCurrentId()).build();
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        return list;
    }
/*
* 清空购物车
* */
    @Override
    public void clean() {
        Long userId = BaseContext.getCurrentId();
      /*  ShoppingCart shoppingCart = ShoppingCart.builder()
                .userId(userId).build();

        shoppingCartMapper.delete(shoppingCart);*/
         shoppingCartMapper.deleteByUserId(userId);
    }
/*
* 删除购物车中一个商品
* */
    @Override
    public void removeOne(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
        Long userId = BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list != null && list.size() > 0) {
            ShoppingCart temp = list.get(0);
            if(temp.getNumber()-1==0){
                shoppingCartMapper.deleteById(temp.getId());
            }else{
                temp.setNumber(temp.getNumber() - 1);
                shoppingCartMapper.updateNumberById(temp);
            }


        }
    }
}